Internal-combustion engine.



P. V. WUDWARID. JLNTERNAL oMBUsTmN ENGINE.

APPLICATION FILED 0UT.23.1909. whm Patented Aug. 9, 1910.

25 a SHEETS-SHEET 1A P. V. WOODWARD. INTERNAL GOMBUSTION ENGINE. APPLIUATXON FILED omas. 1909.

A @JW I www P. V. WOODWARD.

NTERNAL UOMBUSTION ENGNE.

APPLIOATIUN FILED 00'1123, 1909.

Patented Aug.

NTERNIWCOMBUSTION ENGINE.

atacar.

tpecication of Letters Patent.

Patented .1 -tragt), 19M).

Implication led october 23, 1.909. Serial Ito. 524,190.

Zh all whom 'it may roncem:

Be it known that I, Pano-r V. Woonwano,

ia citizen ofCanada, residing at London, in

the Province of ,Ontario and Dominion "of ,m .,Canada., have invented new. and useful lmprovements in internalCombustion Engines, of which the following is a specification.-

This `invention relates to internal combus tibn engines and a particular object of the in invention is to4 construct a simple, etiicientl :and powerful engine in extremely compact form.

A .furtherohject of thcrinvention is to Hconstruct asimplennd compact engine in its I.which a positive carrying hub shall be -mounted for oscillation Within a casing or .cylinder Aliaving stationary abutments.

A still further object of the invention is to construct a machine of the character deaovscribed wherein the driven shaft shall ,be supported for rotation within the oscillating hub, thereby Vidin exterior beariilgs for said shaft, and greaty econoinizing space. Still further objects of the invention are to simplify improve the ngeneral constinction and operation of an engine having ;.thejycharacteristies outlined above.

With. these and other ends in view which will Ereadily appear vas the nature of the invention is better understood, the same consistsin the improved construction and novel arrangement and combination of parts Awhich will be hereinafter fully described {3;5, particularly pointed out in the claims.

in` the accompanying drawings has been `illustrated a simple and preferred forni of the invention; it that no limitation is necessarily made to the precise structural `details therein exhibited, but .that changed alterations and modiications Within the scope of the invention may beresorted to when desired.

In the drawings: Figure l is an end ele- .5 vation of an engine constructed in accordance with the invention. Fig. 2 is a vertical sectional view taken on the lane indicated `by the line 2-2 in Fig. l. 4ig. 3 is a `vertical transverse sectional view taken sub stantially at right anglesto Fig. 2., Fig. 4

is a detail end elevation showing the caln `whereby the exhaust valves are actuated. Fig. is a detail plan View of a link forining part of the mechanism whereby the oscil- Vtop and bottom pieces sages 1l for Water or avoidingthe necessity of proand being however understood shaft 28 aswell `and Well known .motion from said shaft.

latorylmovement Aof the piston earryinghub.

`l Vis converted into'rotary motion when trans- :nutted to the driven shaft.

Correspondingparts 1n the several :Figures are denoted by ke characters ot' reference.

The casing of the improved engine, frenerall known as the cylinder 1s divided ongitu inally of its axis into two parts or mein bers which will be hereinafter referred to as the top piece 7 and the bottom piece S, said being provided with marginal danges 9 for the reception of connecting means such as bolts or screws 10;

The casing members arev cored to form pasother iiuid whereby the temperature of the casing may he reduced when the engine is in operation.

, Supported for rotation in 'the `ends of the A casing,laxially of the latter is a hub i2 which combines with the interior walls of the casing to form an annular recess or passage of approximately circular cross section. The hub 1:2 carries two avings or pistons 14- extendino' in diei. etrically opposite directions; and abutments .l5 which are lilrewise diainetrically opposed are firmly lsecured or mounted in the annular passage of the casing, the abutments 15 as well as the pistons le are provided with paclti g 4strips 16 to prevent leakage; i

inlet ports 17 for the or exploslve vapor are formed in one side or casing about midway between the abutmcnts l5 and exhaust ports 18 are formed in the opposite side or end ofthe casing also about midway between the abutments. The inlet ports 17 communicate with the branches 19 of the feed pipe E20 through the valve ca sings 21 in which spring actuated valves 29. are seated to regulate the How "of explosive Huid, said valves being actuated by suction `of the pistons; the exhaust ports in like manner communicate with the atmosphere through valve casings 23 wherein are seated spring actuated valves Qt, the stems of which 25`are provided` with laterally extending lugs 2G lying in the path of a cam 27 mounted upon end of the loo a shaft 28 which is supported for rotation Within the hub l2 axially of the latter and whereby said valves are unseated at proper intervals to'permit the escape oi the spent gases forming the products of combustion.

A iy Wheel 29 may be mounted upon the character for transmitting as means of any suitable The hub 12 at one end projects through the casing as shown at 30 and upon the shaft 28 adjacent to said projection is formed a crank 31. The projection 30 of the hub is provided with spaced arms 32 between which is pivotally supported one end of a link 38. A specially constructed link L having arms 34 and 35"Which are disposed in different planes and one of which is of greater length than the other, is pi'votally supported upona stud 36 extending from the casing of the machine or from a bracketconnected therewith. The link 33, one end, of which is connected with the arms 32 is connected at its upper end with'the short arm 34 of the link L and -the relativelylong arm 35 of said link is connected by a ptman 37 'with the crank 31 of the rotary Shaft 28.

Pairs of spark plugs 38 of ordinary construction are mounted in the casing adjacent to opposite sides of the abutments l5 for the purpose of igniting the gases introduced into the casing.v j

From the foregoing description taken in connection with i the drawings hereto annexed the operation and advantages of this invention will Abe readily understood by those skilled in the art to which it appertains. It is obvious `that'the cam whereby the exhaust valves vare ac xtuatedushall be so constructed and so disposed that the exhaust valves will be opened at pro r intervals and permitted to remain open e proper length of time, or while the piston carrying hub moves a predetermined distance. The operation at diametrically opposite sides of the cylinder is identical. The parts are so related that when either piston passes an exhaust port, the exhaust valve will be moved to an open position and will be permitted to close only after suicient time has been given for the exhaust to take place. By the continued movement of the piston :the inlet valvewill bev opened by suction and vexplosive gas or vapor will be caused to enter mtothe space between the rear side of the piston (with reference to .its direction of l movement) and the abutment at one side of the casing. -The -admission of gas will continue nntll the movement of the iston carrying hub is reversed; the gas will now become compressed between what is now the `front side of the piston (with reference to its direction ofkmovement) and the proximate abutment'until at the moment of ultif mate compression the charge becomes ignited `and the movement of the piston carrying hub is again reversed as ajconsequence 'of the res1l1ent explos1on. lIn the meantime, the spent ases have become exhausted from the space etween the opposite side of the piston and the roximate abutment a 1d,

i a fresh charge has' een admitted to become subsequently compressed and ignited, and

the motion will thus continue indefinitely,

the oscillatory motion of the piston carrying hub being transformed into a rotary motion of the crank carrying shaft. Thus it will be seen that with only two valve con-A trolled inlets and two valve-controlled exhaust ports 4t explosions will occur for each complete oscillation of the piston carrying hub. lt will also be seen that the construction ofthe improved engine is extremely `simple, its operation complete in every detail and that it is by no means liable to'get out of order.

Having thus described the invention, what is claimed is- 1. In an internal combustion engine, a cylinder, abutments dividing the cylinder into diametrically opposite chambers, a hub supported for oscillation and carrying pistons extending int-o the chambers, two inlet ports opening into diametrically opposite chambers, suction actuated valves controlling said inlets, two exhaust ports communicating with the diametrically opposite chambers, spring seated valves controlling the exhaust ports, a'rotary crank shaft extending through the hub', a cam upon said shaft engaging and actuating the exhaust valves, and motion transmitting and converting means connecting the rotary shaft with the oscillatory hub.

2. In an internal combustion en ine, acylinder, abutments dividing the cy inder into diametrically o posite chambers, a hub supported for osci lation and carrying pistons extendingv into the chambers, two inlet orts opening into diametrically opposite c ambers, suction actuated valves controlling said inlets, two exhaust ports communicating with the diametrically opposite chambers, spring seated valves controllin the exhaustports, a rotary crank shaft exten ing through the hub, a cam upon said shaft engaging and actuating the exhaust valves, a crank upon the hub, a` link supported for oscillation upon the cylinder casing and having two arms of different length, a rod connecting the short arm of said link with the crank of the hub, and a pitman connecting the long arm of said link with the crank of the rotary shaft. y 3. In an internal combustion engine, a cylinder, abutments dividing the cylinder into diametrically opposite chambers, a hub supported for oscillation and carrying pistons extending intoA the chambers, two inlet ports aenoe'? nectinzg,r the short arm of said link with the crank of the hub, and a pltrnan eonnectlng the long arm ot said hnk and the crank oi i the rotary shaft.

4f. [n an internal combustion engine, a cyllndel, ahutment dividlng the cyllndei' into dla'metrically oppositechambers,4 a hub s upported. for oscillation and carrying pistons I spring seated valves controlling the exhaust passages, and having; stems," extendingn inwardly in the direction of the axis of the cylinder and provided with laterally eatendin lugs, a rotary trank shaft extendmgthroug the hub, a cam upon said shaft engaging and actuating the exhaust valves, by Contact with the laterally extending1 lugs upon the stems of said valves, and. motion transmitting and l converting means connecting the rotary shaft with the oscillatory hub.

In testimony whereofv I affix my signature 25 in presence of two witnesses.

PnneY V. wionwazen.

Witnesses: i

(ino. H. KEYES, lmlmlm STEWART. 

